ribs outline Flashcards
what is the thoracic cage composed of?
ribs
costal cartilage
sternum
thoracic vertebrae
what is the functions of thoracic cage?
protection and support
assists with respiration
what rib pairs are the true ribs?
rib pairs 1-7
direct attachment to sternum
what rib pairs are the false ribs?
rib pairs 8-12
indirect attachment to sternum
what are the floating rib pairs?
11 and 12
no attachment to the sternum
what rib pairs are the TYPICAL ribs?
rib pairs 3-9
each of the typical ribs can be divided into what four regions?
head
neck
tubercle
body
what is known as the capitulum costae?
head
what articular facet of the typical ribs would articulate with the inferior costal demi-facet of a thoracic vertebra?
superior articular facet
which articular facet of the typical ribs, articulates with the superior costal demi-facet of a thoracic vertebra?
inferior articular facet
on a typical rib, what is the body ridge found between the superior and inferior articular facets?
interarticular crest (ligament attachment site)
what is known as the collum costae?
Neck
on the neck of a typical rib, what is the ridge on the superior surface?
Crest
on the tubercle of a typical rib there is an articular facet that articulates where?
articulates with the transverse costal facet of the thoracic vertebra
what is the positioning of the articular facet of the typical rib tubercle?
positioned more inferiorly and proximally on the bone
on the tubercle on a typical rib, what is the site of ligamentous attachement between the rib and the transverse process of the thoracic vertebra?
non-articular surface
what is the positioning of the non-articular surface on the tubercle of a typical rib?
positioned more superiorly and distally on the bone
what three things comprise the body of a typical rib?
costal angle
costal groove
costal cartilage surface
on the body of a typical rib, what is located on the inferior deep border of the rib?
costal groove
the costal cartilage surface is the attachment site for what?
costal cartilage….
a tad bit obvious
on the body of a typical rib, where is the costal cartilage surface located?
distal end of corpus
what are the atypical rib pairs?
1,2,10,11,12
what are the components of the first rib?
head
neck
body
what is the articular facet of the first rib head for?
for articulation with the superior costal facet of T1
the neck of of the first rib has no?
distinctive crest
the body of the first rib has what three things?
groove for the subclavian artery
scalene tubercle
groove for the subclavian vein
where is the groove for the subclavian artery on the body of the first rib?
proximal to the scalene tubercle
where is the scalene tubercle on the body of the first rib?
roughened elevation, on the inner border of the superior surface
where is the groove for the subclavian vein on the body of the first rib?
distal to the scalene tubercle
the body of the first rib has no costal ______ and no costal _______.
no costal angle
no costal groove
where is the tuberosity for the serratus anterior?
the roughened area, on the outer edge of the superior surface of the second rib’s body
which rib has a variable head that has either one or two articular facets?
tenth rib
articular facet of tubercle may be missing
the head of the eleventh rib has a single?
articular facet
the neck and tubercle are absent on what ribs?
11th and 12th
what rib has a slight costal angle, the costal groove may be absent or very shallow, and costal cartilage surface is absent?
11th rib
the head of the twelfth rib has?
a single articular facet
describe the body of the twelfth rib?
no costal angle
no costal groove
no costal cartilage surface
the sternum is divided into what sections?
manubrium sterni (presternum)
Body (gladious or corpus sterni)
Xiphoid process
the jugular (suprasternal) notch is located where?
concavity on the superior border of the manubrium
here is the clavicular notch located?
concave facet surface lateral to the jugular notch
on the manubrium
where is costal notch 1 located?
on the manubrium, it lies immediately inferior and lateral to the clavicular notch
where is costal notch 2?
lies at the inferior-lateral margin of the manubrium, where the manubrium joins the body
what are the sternebrae?
individual segments, typically fused together
how many sternebrae are tehre?
4
what are the transverse lines?
line between the individual sternebrae
where are costal notches 3-7 found?
found on the lateral margin of sternebrae 1-4
where specifically is costal notch 7?
lies at the inferior-lateral margin of the body, where the body joins with the xiphoid process
where is the xiphoid process (ensiform process or metasternum)?
most inferior segment of the sternum
